Why Same-Arm Vaccinations May Be More Effective When it comes to vaccines, it seems that picking which arm to receive the dose in can have a big impact on how effective the vaccine is. The controversy surrounds the notion that individuals who receive all of their immunizations in one arm react more strongly to infection than others who get them split between both arms. This article dives into the potential benefits of giving vaccines in a focused and exact manner, which was published in the prestigious journal eBioMedicine. About 300 people without a history of COVID-19 infection participated in this